Arc lamp



Nov. 8, 193g. A. MULLER 2,136,309

ARC LAMP Filed Dec. l5, 1937 7n Ven for:

Patented Nov. 8, 1938 yUNITED STATES -EDATENT FFEC ARC LAMP Arthur Mller, Leipzig-Leutzsch, Germany, assignor to the firm Korting z Mathiesen Aktiengesellschaft, Leipzig-Leutzsch, Germany Application December 13, 1937, Serial No. 179,522 In Germany December Z4, 1936 5 Claims. (Cl. 176-53) This invention relates to improvements in are network R. S. T. Potential coil is con ected vlamps and particularly to an arc lamp to be across the leads to two electrodes, and the oppoused with multiphase current, sitely Wound current coils l and S are connected It is the object of this invention to provide in the leads to said two electrodes. 5 an arc lamp having a reliable electrode regu- The Operation Of the elect-'mile regulating meel- 5 latins mechanism operable with multiphase alanism is as follows: The arcs between the tips ternating current. of the three electrodes l are maintained uniform It is the further object f this invention to through the action of the electro-magnet 5 which DrOVde a three electrode aro lamp having mechturns the gears Si in equal amounts to uniformly l0 anism to adjust the electrodes uniformly by use adjust the electrode holders 2 connected t. ere- 10 of a single electro-magnet. to. When the between the electrodes be- It is also the object of this invention to pre- Comes too large, the Change in the potential and vide a three electrode are Iamp devoid of com- Current values causes the core to be moved plexity and economical to manufacture and maindOWnWedly Whe-Telly the eleetrede ends 0f heldtain. ers 2 are moved toward the arc to partially 15 Further objects and advantages of the inven- ClOSe the gap. By Drei/Cling @Yeller tennen in tion will be apparent from the following dethe Spring I8 suppetne eOIe 5, e balai-leed reelltailed description of the embodiments of the inletlg eCtOn iS Secured Wllelfl maintains Uni-- vention shown in the accompanying drawing, fOTn eres. wherein: This invention also contemplates various 20 Figure l is an elevation vievv, partly diagram- Changes and leellengemente 0f the elepll'etus matic, or an are lamp embodying this. invention. Shown and described. as it Will be aie-parent to Figure 2 is a Section View Showing the intein one skilled in the art that numerous variations engagement of gears provided for regulating the ere DOSSble Within 'the Scene Of the appended position of the electrode holders. ClaimS- Referring to the drawing, for the purposes of Claimillustration, the arc lamp electrodes or carbone, 1- In an el@ lamp fel tllee Fliese alternating 'three in number, are designated by the nume-a1 current, the combination comprising three n- The electrodes l are supported in homers 2 terengaging rotatable elements, three electrode Se and arranged to swing in vertical intersecting holders dSlUOSeCl relatively et obtuse angles, eae'n 30 planes, preferably disposed about one hundred holder being operatively connected to one of said and twenty degrees apart. Three intermeshing elements and lJTOVCled- With e Sldeble nVOt end gears 3 are Supported @n pivot-S ig, g3 and i4 Cale guide therefor, and an electro-magnet responried by the lamp frame and may b3 arranged as sive to variations in the electrical values of the 25 shown in Figure 2. One of the gears is proarc connected to one of said elements for turn- 35 vided with two rows of teeth l5 for engaging ine each of said elements a uniform amount, both of the other gears, whereby an three gears whereby the gap between electrodes is regulated. may be rotated simultaneously in equal amounts. 2- In all 31"@ lamp fel three phase alternating' The upper end of each @16C-trod@ 11015.@ 2 is pvcurrent, the combination comprising three nter- .m otally connected to a gear 3, the location of the engaging gears arranged relatively at 120, three 40 pivot being eccentric to the center of the gear. eleCIOde holders dSPOSed relatively at ebt/Use Each electrode holder 2 is also provided with a angles, Seid llelders being lJlVetlll Genneeted pin i5 engaging a guide slot il in the support t0 Seid gears and being PYOViCleel With ide for its operating gear 3. means, and magnetic responsive to varia- .f, @ne of the gears 31's pri-,vided with a spyogkgt tions in the electrical values of the are con- 45 wheel i secured thereto. A chain or the like neCteCl t0 Said gears for turning the same to extends from sprocket to the core 5 of an regulate: the gall between Seid eleCtlOdeS- decu-@magnet The @me 5 js supported by a 3. In an arc lamp for operation with three spring :e @f suitable tension. The electro-niegnhe-Se alternating Current. the Combination Com- .i'o net nas three @ons 'i and e. Cou e a potenprisms three intermeshine sears arranged rela- 50 tial coil, and coils 'l 8 are oppositely contively at obtuse angles, One 0I" Said gears havnected current coils. The electrodes l are coning double teeth fel* engagement With eaCll O nected with iiexible leads to suitable terminals the other gears, three electrode holders arranged connected through resstances 8, lil and l! to relatively at obtuse angles, a slidable pivot for the wires of a three phase alternating current each of said holders and a pivotal connection 55 between each holder and a gear, an electromagnet mechanically connected to one of said gears and provided with a potential coil and two oppositely wound current coils connected to different phases, whereby the gap between said arc lamp electrodes is uniformly regulated in accordance with variations in the electrical Values of the arc.

4. In an are lamp for multiphase alternating current, the combination comprising a plurality of interengaging elements, an electrode and an electrode holder for each of said elements, each of said holders being pivotally connected to its corresponding element, guide means for said holders, and magnetic means operatively connected to one of said elements for turning each of said elements uniformly in response to variations in the electrical values of the arc between said electrodes, whereby the gap between said electrodes is automatically regulated.

5. In an arc lamp for three phase alternating current, the combination comprising three interengaging gears disposed relatively at obtuse angles, three electrode holders pivotally connected, respectively, to said gears, an electro-magnet having a core and having a plurality of coils connected to different current phases for regulating the position of said core, and means connecting said core to one of said gears for turning each of said gears, whereby the electrode holders are uniformly adjusted in response to variations in the electrical values of the arc.

ARTHUR 

